QT6 Charts devel files

Hi, Trying to compile a Qt6 Charts application, I see that the Qt6 Charts header files are missing. I've installed QT6Charrts, but I can't find  the corresponding -devel package in Yast. There are a lot less include dirs in qt6 compared with qt5: l /usr/include/qt6 | wc -l 38 l /usr/include/qt5 | wc -l 57 How can I get the missing -devel files? best regards, Jogchum